X-Trans CFA w/ 45° rotation - Checkerboard Demosaicing

For the X-Trans CFA with 45° rotation only. The pre-research and verification includes remosaicing and demosaicing.

Based on Fuji's previous development of Super CCD HR, Super CCD EXR, and EXR CMOS with rotating pixels, the pre-research and verification includes remosaicing and demosaicing.

For remosaicing, you can select sharp sampling for a natural image or an image with a low-pass filter. if a sharp downsampled image is input, set sharp = 1 to simulate the low-pass effect of the rotation pixels.

raw = simple_en_xtrans(color, sharp)

    if sharp
        disp('Sharp.');
    else
        color = imfilter(color, [0,1,0;1,4,1;0,1,0]/8, 'same');
		disp('Soft.');
    end